Abstract:Based on long-term monitoring data, the dynamics of plant community biomass, species diversity, bio-thermodynamic health state (eco-exergy) and soil properties of Castanopsis hystrix monoculture, 10 native species and 30 native species mixed forest plantations after planting 13 years were quantitatively revealed, and compared with Eucalyptus urophylla monoculture and the naturally recovered shrub and herb (SH) ecosystem. The results showed that:(1) the plant community biomasses of all five restoration modes exhibited a fluctuating increase tendency during the study period, but with different development rates. The biomasses of the E. urophylla monoculture and the two mixed-native species forest plantations at 13 years old were significantly higher than their own states at 1 year old respectively, besides significantly higher than that of the SH ecosystem. The biomass of the C. hystrix monoculture developed slowly than that of other forest plantations but quickly than that of the SH. (2) The plant species diversity (species richness, Shannon-Wiener index, and Pielou index) decreased progressively in the five restoration modes from age 6 to 13, and the downtrends of the 30 native species mixed forest plantation were most significant. At 13 years old, the Shannon-Wiener index of the two mixed-native species plantations was slightly higher than that of the two monocultures and the SH. The Pielou index of the 10 native species mixed forest plantation was slightly higher than that of the C. hystrix monoculture and the 30 native species mixed forest plantation, but was significantly higher than that of the E. urophylla monoculture and the SH. (3) The community bio-thermodynamic heath states of the four forest plantations significantly increased from age 6 to 13. Up to 13 years old, the plant community eco-exergies of the two mixed-native species forest plantations were significantly higher than those of the two monocultures which were significantly higher than that of the SH. (4) Among the five vegetation restoration modes, it was the 10 native species mixed forest plantation that had the superior characteristic at soil nutrient accumulation, with its soil total nitrogen content significantly higher than that of the C. hystrix monoculture and the SH at 13 years old, but not significantly different with that of the 30 native species mixed forest plantation and the E. urophylla monoculture. (5) The results of redundancy analysis showed that the correlation between vegetation and soil was gradually established during this study period, and the explanatory degree of soil properties to the change of aboveground vegetation structure gradually increased from 73.3% at age 1 to 82.0% at age 13. However, only the correlation between the soil organic carbon content and the aboveground vegetation structure indices reached a significant level at age 13. The results showed that the development of the native species forest plantations followed the same laws with the exotic species monoculture and the natural recovery ecosystem in the pant community structure, the bio-thermodynamic health state and the relationship between plant community and soil properties. Comparatively, the mixed-native forest plantations were superior to the monoculture plantations in plant community development and soil nutrient accumulation, while the monoculture plantations were better than the natural recovery ecosystem. However, the initiative plant species richness was not the higher the better. After 13 years development, the 10 native species mixed forest plantation performed better than the 30 native species mixed forest plantation in both vegetation structures and soil properties. The establishment of the relationship between vegetation and soil is a long-term process, and the effects of different vegetation restoration modes on soil properties is hard to emerge in a decade.